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(No Model.) ssheebs-sneet 1'.

H. NICOLL. 4 RBVOLUBLB GRATB.

Patented Nov. Z6, 1889.

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(No Model.) 2 Sheets--Sheet 2.

' H. NICOLL.

REVOLUBLE GRATB. No. 415,731. Patented Nov. 26, 188g.

'UNITED STATES PATENT OFFICE.

IIENRY NIOOLL, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE-BOSTON BRASS AND TILE COMPANY, OF SAME PLACE.

REVOLUBLE GRATE.

SPECIFICATION forming part of Letters Patent No. 415,731, dated November 26, 1889. Application filed December 15, 1888. Serial No. 293,718. (No model.)

To all whom it may concern.-

Be it known that I, HENRY NICOLL, of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and Improved Revoluble Grate, of which the following is a full, clear, and exact description.

This invention relates to lire-place grates, the main object of the invention being to provide for a proper regulation of the draft without the use of the ordinarydetachable blower; and to the end named the invention consists, essentially, of a revolubly-inounted grate provided with an open-faced dome-like screen that is formed with a draft-opening, all as will be hereinafter more fully explained, and specifically pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar figures and letters of reference indicate corresponding parts in all the views.

Figure 1 is a face view of a fire-place, representing the same as it appears when provided with my improved grate. Fig. 2 is a central sectional elevation taken on line cc of Fig. 1, the parts being shown as they appear when in their normal position. Fig. 3 is a similarview, except that the parts are shown as they appear when the grate is turned to bring the screen in front. Fig. 4 is a sectional plan view taken on line y g/ of Fig. 1. Fig. 5 is a View of the grate proper, the casing being removed. Fig. 6 is an enlarged sectional view of the forward portion of the grate 5 and Fig. 7 is a detail view illustrating the arrangement of the catch, said catch being shown in section.

In carrying ont my invention I provide a dome-like cap 10, arranged so that when fitted in the chimney 11 it will extend outward beyond the face of the chimney-piece, as is clearly shown in the drawings, the cap being formed with an opening a, through which com munication with the iiue 12 is established.

The grate proper is preferably made up of an outer or niain section 13, provided with internal flanges 2, a bottomless basket-like sifting-section 14, having a rim 3, that rests on the flanges 2, and a dumping-section 15, said du mping-section constituting the bottom of the sifting-section and being supported by trunnions 4, that ride in hearings formed in brackets 5 and 6, which brackets are connected to and extend downward from the niain gratesection. The brackets 5 and 6 are connected by 55 a cross-bar 1C, which carries a downwardlyextending pintle 17, that rides in a raised step 1S, beneath which step there is placed an ashpan 19.

To the grate-section 13 there is rigidly con- 6o nected a screen 20, having an open front Z) and a dome-like top c, that is provided with a central upwardly-extending pintle 17 n, arranged toenter an aperture formed in the cap 10, beneath which cap the top c lits, as shown in Figs. 2 65 and 3. In the top c, I forni two openings 8 and 3, either one of which may be brought into register with the opening a of the cap l0.

Across the front of the lowerportion of the fire-place opening' I place a frame 30, which 7o carries a gravity-catch 31, arranged to engage lugs 9 and 9, formed upon the brackets 5 and 6, respectively. In the frame 3Q, just above the catch 3l, I form an opening f, that is normally closed by a gravity-lid 32, and above the opening f, I form a long slot or opening that is normally closed by slides 33, the object of said slot or opening being to provide for the introduction of a shaker formed to fiti upon the shaker-armz'of the grate-section. 14, 8o and at the same time to provide for the regulation of the draft, while the opening f gives access to the trunnions of the dumping gratesection 15, which trunnions are formed to lit the socket of the dumpen 8 5 The construction above described is such that the grate may be moved from the position shown in Figs. l and 2, which is the normal position of the grate, to the position shown in Fig. 3, this movement being brought 9o about by freeing' the catch 31 from engagement with the lug 9, and in then turning the grate until the catch engages the lug 9, at which time the opening S will register with the. opening a, and the screen 2O will close 95 the tire-place opening above the grate, whereby a strong draftis produced, as will be readily understood.

To shake the grate, the slides are moved back and the shaker broughtinto engagement roo with the shaker-arm z'.

Although I have illustrated and described speciiic constructions in this application, I desire it to be distinctly understood that any proper construction embodying a revoluble grate provided with an open-faced screen would be Within the spirit of my invention.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. The combination,\vitl1 arevolublegrate, of an open-'faced screen rigidly connected thereto, as and for the purpose stated.

2. The combination, with a revoluble grate, of an Open-faced screen connected thereto, and a dome-like top connected to the screen and formed With draft-openings, substantially as described.

3. The combination, with a grate provided with a downwardly-extending pintle, of a step in which said pintle rides, an open-faced screen connected to the grate and formed With a top in which there are draft-openings, a pintle extending upward from the screentop, and a pintle-bearing, substantially as described.

4. The combination, with a revoluble grate, of an open-faced screen, a cap formed with draft-openings, and a catch arranged for engagement with the grate, substantially as described. I

5. The combination, with a cap lO, formed withan opening a, of a grate having a downwardly-extending pintle, a step in which said pintle rides, an open-faced screen having draft-openings, said screen being rigidly connected to the grate, a pintle extending upward from the screen-top to enter a bearing formed in the cap 10, and a frame 30, all arranged substantially as described.

HENRY NICOLL. Vitnesses:

WILLIAM B. DURANT, HENRY J. STEVENS. 

